Click above for high-res live shots of the 2009 Pontiac Solstice Coupe

Sporting a specific output of 130 horsepower-per-liter, the turbocharged, direct-injected Ecotec four-cylinder from GM that's featured in the Pontiac Solstice GXP, Saturn Sky Redline and SS versions of the Chevy HHR and Cobalt, is already one heck of an accomplishment. But wait... there's more -- power that is. According to Motor Trend, shortly after the Solstice Coupe goes on sale next year, the blown-Ecotec could make 300 horsepower or more, putting it in close competition with performance stalwarts such as Nissan's Z. What's more, the same engine should also be available in the convertible versions of both the Solstice GXP and Saturn Sky Redline as well, paired only with a five-speed manual tranny in all applications.

This is just a rumor at this point, but MT seems pretty confident in its validity, citing higher intercooled boost along with a new fuel rail as the tech behind the power increase. The rumor does not mention if the higher-output mill will appear in other applications, though we remember something about the Camaro possibly getting a turbo-four mill as an option, and a tuner-friendly option offering 300 galloping horsies in stock form would make for a very interesting option in the pony car.

[Source: Motor Trend via eGMCarTech]